AED1,480 Cheap Flights from Seattle (SEA) to London (LHR)

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Popular airlines from Seattle-Tacoma International Airport (SEA) to Heathrow Airport (LHR)

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Cheap Flights from Seattle to London (SEA-LHR)

Prices were available within the past 7 days and start at AED1,480 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

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Flights from Seattle (SEA) to London (LHR)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Heathrow
Distance
7657 km
Average flight time
17 hours 34 mins

Seattle to London Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Seattle to London offer the perfect respite. Not only does exploring London provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Seattle to London may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from to today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of London are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to London more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to London is AED1,480 now!

Frequently asked questions

How long does it take to fly from Sea-Tac Airport to Heathrow Airport?
British Airways operates a direct flight heading off from Sea-Tac Airport at 1:40PM and landing at Heathrow Airport at 7:00AM — a total flying time of 9 hours and 20 minutes. Choose a seat, bring a magazine to keep you entertained and the time will whiz by.
Is it cheaper to buy a plane ticket from Sea-Tac Airport to LHR last minute?
Being the spontaneous type is an awesome way to travel the globe, but it isn't always the ideal way to get your hands on a bargain flight. Consider booking your SEA to Heathrow Airport trip in advance rather than leaving it until the last minute. Based on flight pricing and demand studies in 2022, we have found that the best time to book domestic flights is between 28 – 35 days ahead of the departure date, and international flights three to four months in advance. We recommend saving that spontaneity for when you get to your destination!
What airline has the least delays from Seattle - Tacoma Intl. Airport (SEA) to Heathrow Airport (LHR)?
Jet off with Virgin Atlantic from Sea-Tac Airport to Heathrow Airport and you're more likely to touch down at the time listed on your boarding pass. This carrier takes out first place on this route, with 86% of services arriving on time. If you find yourself facing a delay, the Expedia App is the best way to stay up to date. Download it and you'll get immediate trip alerts, from flight delays to gate number changes.
What airports do you fly into for London from Seattle?
From Seattle, you can journey to London via Heathrow Airport (LHR), London City Airport (LCY) and Gatwick Airport (LGW). Check which terminal works best for you before you make a decision. If you settle on Heathrow Airport (LHR), it's about 23 kilometers west of downtown. Use the dollars you save when booking your fare with Expedia to enjoy the city's popular attractions, such as Big Ben and Buckingham Palace.
What are the most popular departure times for flights from Seattle - Tacoma Intl. Airport (SEA) to Heathrow Airport?
Between 4:00 PM - 5:00 PM is when you'll find the most Virgin Atlantic flights jetting from SEA to Heathrow Airport. Our tip? Choose a flight that departs early. With air traffic yet to build up around airports, your chances of jumping on a delay-free flight are higher.
Can I change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Heathrow Airport?
You can quickly make changes to your Seattle - Tacoma Intl. Airport (SEA) to Heathrow Airport trip through the Expedia Trips portal. But before you begin, look over the fare rules in your itinerary to learn what the carrier will let you do and what fees apply for changes. Some airlines charge a change fee per person, plus any difference in prices. However, if you booked in the last 24 hours, you may be able to cancel for free and organize new flights. You can also browse our Customer Service portal for further information and to connect with our Virtual Agent.

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